package com.webserver.http;

import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;
import java.util.HashMap;
import java.util.Map;

public class HttpServletRequest {
    private Socket socket;
    private String method;
    private String uri;
    private String protocol;
    private Map<String,String> headers=new HashMap<>();

    public HttpServletRequest(Socket socket) throws IOException {
        this.socket=socket;
        parseRequestLine();
        parseHeaders();
        parseContent();



    }

    private void parseRequestLine() throws IOException {
        String line=readLine();
        System.out.println("请求行:"+line);

        String[] data=line.split("\\s");
        method=data[0];
        uri=data[1];
        protocol=data[2];
        System.out.println("method:"+method);
        System.out.println("uri:"+uri);
        System.out.println("protocol:"+protocol);
    }
    private void parseHeaders() throws IOException {
        while(true) {
            String line = readLine();
            if(line.isEmpty()){
                break;
            }
            System.out.println("消息头:" + line);
            String[] data=line.split(":\\s");
            headers.put(data[0],data[1]);
        }
        System.out.println("headers:"+headers);
    }
    private void parseContent(){}

    private String readLine() throws IOException {
        InputStream in=socket.getInputStream();
        StringBuilder builder=new StringBuilder();
        char cur='a';
        char pre='a';
        int d;
        while((d=in.read())!=-1){
            cur=(char)d;
            if(pre==13&&cur==10){
                break;
            }
            builder.append(cur);
            pre=cur;
        }
        return builder.toString().trim();
    }

    public String getMethod() {
        return method;
    }

    public String getUri() {
        return uri;
    }

    public String getProtocol() {
        return protocol;
    }

    public String getHeader(String name){
        return headers.get(name);
    }
}
